Java Swing Eclipse程序似乎在编译;不管怎么说

Question

我刚刚回到编程Swing和java一般，并且非常生疏。我试图完成的程序似乎是通过eclipse进行编译，但它不会运行，它告诉我它没有主要类型。而且它没有给我一个错误通知，所以我现在有点卡在这里。

我从来没有见过这个错误，所以不确定它是什么，或者不记得它是什么，如果我有。任何想法我做错了或应该修复让这个运行，谢谢：

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
import java.util.Timer;
import javax.swing.Timer.*;
import javax.swing.event.*;

public class FamousLocations extends JFrame implements ChangeListener, ActionListener, Runnable
{
    private static final long serialVersionUID = 0;
    JMenuBar p = new JMenuBar();
    int Selected = 0;

    ImageIcon a = new ImageIcon("america.jpg");
    ImageIcon j = new ImageIcon("Japan.jpg");
    ImageIcon c = new ImageIcon("china.jpg");
    ImageIcon i = new ImageIcon("ireland.jpg");
    ImageIcon t = new ImageIcon("thailand.jpg");
    ImageIcon ca = new ImageIcon("Niagra-Falls.jpg");
    Icon[] pics = {a,j,c,i,t,ca};
    private JLabel ImageLabel = new JLabel(pics[Selected]);

    String america = ("Grand Canyon, America");
    String japan = ("Kinkaku-ji (The Golden Pavilion) Kyoto, Japan");
    String china = ("Mount Huangshan, China");
    String ireland = ("Newgrange, Ireland");
    String thailand = ("Bangkok ,Thailand");
    String canada = ("Niagra Falls , Canada");
    String[] Box = {america, japan, china, ireland, thailand, canada};
    JTextArea lo = new JTextArea(Box[Selected]);

    String InfoGrand = new String ("desciption");
    String InfoHiro = new String ("desciption");
    String InfoMount = new String ("desciption");
    String InfoNew = new String ("desciption");
    String InfoBang = new String ("desciption");
    String InfoNiag = new String ("desciption");
    String[] Info = {InfoGrand, InfoHiro, InfoMount, InfoNew, InfoBang, InfoNiag};
    JTextArea ta = new JTextArea(Info[Selected]);

    private JTabbedPane tp = new JTabbedPane();
    public JSlider slider = new JSlider();
    private JPanel dropd = new JPanel();
    private JPanel checkb = new JPanel();
    private JPanel ImagePan = new JPanel();
    private JPanel InfoPan = new JPanel();

    private JCheckBox slider1 = new JCheckBox ("Show Slider" , true);
    private JCheckBox slideshow1 = new JCheckBox ("Slideshow", false);
    JComboBox com1 = new JComboBox(Box);






    public FamousLocations(){
       setTitle("My Bucket List");
       getContentPane().setLayout(new BorderLayout());
       getContentPane().setBackground(Color.white);
       getContentPane().setSize(1000,1000);
       getContentPane().add(dropd);
       getContentPane().add(slider,BorderLayout.SOUTH);
       getContentPane().add(slider1);
       getContentPane().add(slideshow1);
       getContentPane().add(tp);

       slider.setValue(0);
       slider.addChangeListener(this);
       slider.setOrientation(JSlider.HORIZONTAL);
       slider.setPaintTicks(true);
       slider.setPaintLabels(true);
       slider.setMajorTickSpacing(1);
       slider.setMaximum(5);
       slider.setSnapToTicks(true);

       ImagePan.add(ImageLabel);

       checkb.add(com1);
       checkb.add(slider1);
       checkb.add(slideshow1);

       tp.addTab("Photo", ImagePan);
       tp.addTab("Description of Area", InfoPan);
       tp.addTab("Index and Options", checkb);

       ta.setLineWrap(true); 
       ta.setWrapStyleWord(true);
       ta.setEditable(false);
       ta.setVisible(true);
       ta.setSize(400,400);


       slider1.setVisible(true);
       slider1.addActionListener(this);

       slideshow1.setVisible(true);
       slideshow1.addActionListener(this);
       com1.addActionListener(this);
       com1.addActionListener(this);

       JMenu help = new JMenu("HELP");
       JMenuItem AL1 = help.add("how to use");
       JMenuItem AL2 = help.add("EXIT");
       p.add(help);
       this.setJMenuBar(p);

        AL1.addActionListener(new ActionListener(){
                public void actionPerformed(ActionEvent e){
                    JOptionPane.showMessageDialog(null,"error");
                }
            });
        AL2.addActionListener(new ActionListener(){
                public void actionPerformed(ActionEvent e){
                    System.exit(0);
                }
            });

            setSize(250,250);
            setVisible(true);
    }


    public void change(){
        JTextArea ta=new JTextArea(Box[Selected]); 
        ImagePan.removeAll();
        ImagePan.add(ImageLabel=new JLabel(pics[Selected]));
        InfoPan.removeAll();
        InfoPan.add(ImageLabel=new JLabel(Info[Selected])); 
        ta.setLineWrap(true); 
        ta.setWrapStyleWord(true);
        ta.setEditable(false);
        ta.setVisible(true);
        ta.setSize(400,400);
        ImagePan.repaint();
        validateTree();     
    }

    public void run(){
            for(int y = 0;y==y+1; y++){
                slider.setValue(y);

                try{
                    Thread.sleep (1000);
                }

                catch (Exception e) {}
}
    }





    public void actionPerformed(ActionEvent e){

         if(e.getSource()==slider1) {slider.setVisible(slider1.isSelected());}

         else if(e.getSource()==com1)
         {Selected=com1.getSelectedIndex(); change();}

         else if(e.getSource()==slideshow1)
         {new Thread(this).start(); }
         }

    public void stateChanged(ChangeEvent e) {
         if(e.getSource()==slider){Selected=slider.getValue();change();}
         }
}